<template>
  <section class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">硅谷外卖</h2>
        <div class="login_header_title">
          <a href="javascript:;" :class="{ on: loginWay }" @click="loginWay = true">短信登录</a>
          <a href="javascript:;" :class="{ on: !loginWay }" @click="loginWay = false">密码登录</a>
        </div>
      </div>
      <div class="login_content">
        <form @submit.prevent="login">
          <div :class="{ on: loginWay }">
            <section class="login_message">
              <input type="tel" maxlength="11" placeholder="手机号" v-model="phone" />
              <button :disabled="!rightPhone" class="get_verification" :class="{ right_phone: rightPhone }" @click.prevent="getCode">
                {{ computeTime > 0 ? `已发送(${computeTime}s)` : '获取验证码' }}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码" v-model="code" />
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{ on: !loginWay }">
            <section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="手机/邮箱/用户名" v-model="name" />
              </section>
              <section class="login_verification">
                <input type="text" maxlength="8" placeholder="密码" v-model="pwd" v-if="showPwd" />
                <input type="password" maxlength="8" placeholder="密码" v-model="pwd" />
                <div class="switch_button" :class="showPwd ? 'on' : 'off'" @click="showPwd = !showPwd">
                  <div class="switch_circle" :class="{ right: showPwd }"></div>
                  <span class="switch_text">{{ showPwd ? 'abc' : '...' }}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha" />
                <img class="get_verification" src="http://localhost:4000/captcha" alt="captcha" @click="getCaptcha" ref="captcha" />
              </section>
            </section>
          </div>
          <button class="login_submit">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="$router.back()">
        <i class="iconfont icon-jiantou2"></i>
      </a>
    </div>
    <AlertTip :alertText="alertText" v-show="alertShow" @closeTip="closeTip"></AlertTip>
  </section>
</template>

<script>
import AlertTip from '../../components/AlertTip/AlertTip.vue'
import { reqSendCode, reqSmsLogin, reqPwdLogin } from '../../api'
//, reqSmsLogin, reqPwdLogin
export default {
  data() {
    return {
      loginWay: true, // true 表示短信登录 false 代表密码登录
      computeTime: 0,
      showPwd: false,
      phone: '', // 输入的手机号
      pwd: '',
      name: '',
      code: '',
      captcha: '',
      alertText: '',
      alertShow: false
    }
  },
  computed: {
    rightPhone() {
      return /^1\d{10}$/.test(this.phone)
    }
  },
  methods: {
    // 异步获取验证码
    async getCode() {
      // 如果当前没有记时  创建启动计时器
      if (!this.computeTime) {
        // 启动倒计时
        this.computeTime = 30
        this.intervalId = setInterval(() => {
          this.computeTime--
          if (this.computeTime <= 0) {
            clearInterval(this.intervalId)
          }
        }, 1000)
        // 发送ajax请求
        const result = await reqSendCode(this.phone)
        if (result.code === 1) {
          this.showAlert(result.msg)
        }
        if (this.computeTime) {
          this.computeTime = 0
          clearInterval(this.intervalId)
          this.intervalId = null
        }
      }
    },
    showAlert(alertText) {
      this.alertShow = true
      this.alertText = alertText
    },
    closeTip() {
      this.alertShow = false
      this.alertText = ''
    },
    // 前台表单验证
    async login() {
      let result
      if (this.loginWay) {
        // 短信验证
        const { rightPhone, phone, code } = this
        if (!rightPhone) {
          // 手机号不正确
          this.showAlert('手机号不正确')
          return false
        } else if (!/^\d{6}$/.test(code)) {
          // 验证码必须是六位数字
          this.showAlert('验证码必须是六位数字')
          return false
        }
        // 发送ajax 请求短信登录
        result = await reqSmsLogin(phone, code)
      } else {
        // 密码登录
        const { name, pwd, captcha } = this
        if (!name) {
          // 用户名必须指定
          this.showAlert('用户名必须指定')
          return false
        } else if (!pwd) {
          // 验证码必须指定
          this.showAlert('验证码必须指定')
          return false
        } else if (!captcha) {
          // 验证码必须指定
          this.showAlert('验证码必须指定')
          return false
        }
        // 发送ajax 请求密码登录
        result = await reqPwdLogin({ name, pwd, captcha })
      }
      // 停止计时器
      if (this.computeTime) {
        this.computeTime = 0
        clearInterval(this.intervalId)
        this.intervalId = null
      }
      console.log(result + '===' + result.code)
      if (result.code === 0) {
        const user = result.data
        // 经user 保存到vuex 的 state 中
        this.$store.dispatch('recordUser', user)
        // 去个人中心页面
        this.$router.replace('./profile')
      } else {
        const msg = result.msg
        // 刷新页面的验证码图片
        this.getCaptcha()
        this.showAlert(msg)
      }
    },
    getCaptcha() {
      this.$refs.captcha.src = 'http://localhost:4000/captcha?time=' + Date.now()
    }
  },
  components: { AlertTip }
}
</script>

<style lang="stylus">
@import "../../common/stylus/mixins.styl";
.loginContainer
  width 100%
  height 100%
  background #fff
  .loginInner
    padding-top 60px
    width 80%
    margin 0 auto
    .login_header
      .login_logo
        font-size 40px
        font-weight bold
        color #02a774
        text-align center
      .login_header_title
        padding-top 40px
        text-align center
        >a
          color #333
          font-size 14px
          padding-bottom 4px
          &:first-child
            margin-right 40px
          &.on
            color #02a774
            font-weight 700
            border-bottom 2px solid #02a774
    .login_content
      >form
        >div
          display none
          &.on
            display block
          input
            width 100%
            height 100%
            padding-left 10px
            box-sizing border-box
            border 1px solid #ddd
            border-radius 4px
            outline 0
            font 400 14px Arial
            &:focus
              border 1px solid #02a774
          .login_message
            position relative
            margin-top 16px
            height 48px
            font-size 14px
            background #fff
            .get_verification
              position absolute
              top 50%
              right 10px
              transform translateY(-50%)
              border 0
              color #ccc
              font-size 14px
              background transparent
              &.right_phone
                color  black
          .login_verification
            position relative
            margin-top 16px
            height 48px
            font-size 14px
            background #fff
            .switch_button
              font-size 12px
              border 1px solid #ddd
              border-radius 8px
              transition background-color .3s,border-color .3s
              padding 0 6px
              width 30px
              height 16px
              line-height 16px
              color #fff
              position absolute
              top 50%
              right 10px
              transform translateY(-50%)
              &.off
                background #fff
                .switch_text
                  float right
                  color #ddd
              &.on
                background #02a774
              >.switch_circle
                //transform translateX(27px)
                position absolute
                top -1px
                left -1px
                width 16px
                height 16px
                border 1px solid #ddd
                border-radius 50%
                background #fff
                box-shadow 0 2px 4px 0 rgba(0,0,0,.1)
                transition transform .3s
                &.right
                  transform translateX(30px)
          .login_hint
            margin-top 12px
            color #999
            font-size 14px
            line-height 20px
            >a
              color #02a774
        .login_submit
          display block
          width 100%
          height 42px
          margin-top 30px
          border-radius 4px
          background #4cd96f
          color #fff
          text-align center
          font-size 16px
          line-height 42px
          border 0
      .about_us
        display block
        font-size 12px
        margin-top 20px
        text-align center
        color #999
    .go_back
      position absolute
      top 5px
      left 5px
      width 30px
      height 30px
      >.iconfont
        font-size 20px
        color #999
</style>
